| article html file updated | 6 February 2020 06:40 CET | Update | https://www.mdpi.com/1422-0067/15/1/850 |
| article html file updated | 7 May 2019 19:56 CEST | Update | - |
| article html file updated | 21 March 2019 10:50 CET | Update | - |
| article html file updated | 19 August 2015 17:00 CEST | Update | - |
| article html file updated | 3 February 2014 10:48 CET | Original file | - |
| article xml file uploaded | 3 February 2014 10:47 CET | Original file | https://www.mdpi.com/1422-0067/15/1/850/xml |
| article pdf uploaded. | 9 January 2014 13:25 CET | Version of Record | https://www.mdpi.com/1422-0067/15/1/850/pdf |
